Add conditional support for -v / --verbose

With FEATURE_VERBOSE off, practically no size change.
With it on:

function                                             old     new   delta
remove_file                                          493     556     +63
install_main                                         719     765     +46
bb_make_directory                                    383     419     +36
rmdir_main                                           162     191     +29
copy_file                                           1516    1544     +28
mv_main                                              502     525     +23
cmp_main                                             677     693     +16
bbconfig_config_bz2                                 5264    5279     +15
mkdir_main                                           158     168     +10
install_longopts                                      66      76     +10
rm_main                                              167     175      +8
nexpr                                                840     846      +6
scan_tree                                            275     280      +5
fsck_main                                           1807    1811      +4
ed_main                                             2541    2545      +4
expand_one_var                                      1574    1575      +1
swap_on_off_main                                     420     418      -2
parse_command                                       1443    1440      -3
redirect                                            1279    1274      -5
do_load                                              946     918     -28
------------------------------------------------------------------------------
(add/remove: 0/0 grow/shrink: 16/4 up/down: 304/-38)          Total: 266 bytes

Based on the patch by Igor Živković.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

11 files changed, 62 insertions, 10 deletions

diff --git a/coreutils/Config.src b/coreutils/Config.src
index 33defa4db..68c717883 100644
--- a/coreutils/Config.src
+++ b/coreutils/Config.src
@@ -739,6 +739,16 @@ config YES
           yes is used to repeatedly output a specific string, or
           the default string `y'.
 
+comment "Common options"
+
+config FEATURE_VERBOSE
+        bool "Support verbose options (usually -v) for various applets"
+        default y
+        help
+          Enable cp -v, rm -v and similar messages.
+          Also enables long option (--verbose) if it exists.
+          Without this option, -v is accepted but ignored.
+
 comment "Common options for cp and mv"
         depends on CP || MV
 
diff --git a/coreutils/cp.c b/coreutils/cp.c
index de2e512be..247ed0fda 100644
--- a/coreutils/cp.c
+++ b/coreutils/cp.c
@@ -79,7 +79,6 @@ int cp_main(int argc, char **argv)
                 "parents\0"        No_argument "\xff"
                 ;
 #endif
-        // -v (--verbose) is ignored
         flags = getopt32(argv, FILEUTILS_CP_OPTSTR "arPv");
         /* Options of cp from GNU coreutils 6.10:
          * -a, --archive
diff --git a/coreutils/install.c b/coreutils/install.c
index 445497f9a..6c88ae11c 100644
--- a/coreutils/install.c
+++ b/coreutils/install.c
@@ -28,6 +28,9 @@
 
 #if ENABLE_FEATURE_INSTALL_LONG_OPTIONS
 static const char install_longopts[] ALIGN1 =
+        IF_FEATURE_VERBOSE(
+        "verbose\0"             No_argument       "v"
+        )
         "directory\0"           No_argument       "d"
         "preserve-timestamps\0" No_argument       "p"
         "strip\0"               No_argument       "s"
@@ -89,6 +92,7 @@ int install_main(int argc, char **argv)
         const char *gid_str;
         const char *uid_str;
         const char *mode_str;
+        int mkdir_flags = FILEUTILS_RECUR;
         int copy_flags = FILEUTILS_DEREFERENCE | FILEUTILS_FORCE;
         int opts;
         int min_args = 1;
@@ -120,7 +124,6 @@ int install_main(int argc, char **argv)
 #endif
         opt_complementary = "s--d:d--s" IF_FEATURE_INSTALL_LONG_OPTIONS(IF_SELINUX(":Z--\xff:\xff--Z"));
         /* -c exists for backwards compatibility, it's needed */
-        /* -v is ignored ("print name of each created directory") */
         /* -b is ignored ("make a backup of each existing destination file") */
         opts = getopt32(argv, "cvb" "Ddpsg:m:o:" IF_SELINUX("Z:"),
                         &gid_str, &mode_str, &uid_str IF_SELINUX(, &scontext));
@@ -141,6 +144,11 @@ int install_main(int argc, char **argv)
         }
 #endif
 
+        if ((opts & OPT_v) && FILEUTILS_VERBOSE) {
+                mkdir_flags |= FILEUTILS_VERBOSE;
+                copy_flags |= FILEUTILS_VERBOSE;
+        }
+
         /* preserve access and modification time, this is GNU behaviour,
          * BSD only preserves modification time */
         if (opts & OPT_PRESERVE_TIME) {
@@ -171,14 +179,14 @@ int install_main(int argc, char **argv)
                         /* GNU coreutils 6.9 does not set uid:gid
                          * on intermediate created directories
                          * (only on last one) */
-                        if (bb_make_directory(dest, 0755, FILEUTILS_RECUR)) {
+                        if (bb_make_directory(dest, 0755, mkdir_flags)) {
                                 ret = EXIT_FAILURE;
                                 goto next;
                         }
                 } else {
                         if (opts & OPT_MKDIR_LEADING) {
                                 char *ddir = xstrdup(dest);
-                                bb_make_directory(dirname(ddir), 0755, FILEUTILS_RECUR);
+                                bb_make_directory(dirname(ddir), 0755, mkdir_flags);
                                 /* errors are not checked. copy_file
                                  * will fail if dir is not created. */
                                 free(ddir);
diff --git a/coreutils/mkdir.c b/coreutils/mkdir.c
index 4a8e43e43..864edfb0a 100644
--- a/coreutils/mkdir.c
+++ b/coreutils/mkdir.c
@@ -48,7 +48,9 @@ static const char mkdir_longopts[] ALIGN1 =
 #if ENABLE_SELINUX
         "context\0" Required_argument "Z"
 #endif
+#if ENABLE_FEATURE_VERBOSE
         "verbose\0" No_argument       "v"
+#endif
         ;
 #endif
 
@@ -67,7 +69,7 @@ int mkdir_main(int argc UNUSED_PARAM, char **argv)
 #if ENABLE_FEATURE_MKDIR_LONG_OPTIONS
         applet_long_options = mkdir_longopts;
 #endif
-        opt = getopt32(argv, "m:p" IF_SELINUX("Z:") "v", &smode IF_SELINUX(,&scontext));
+        opt = getopt32(argv, "m:pv" IF_SELINUX("Z:"), &smode IF_SELINUX(,&scontext));
         if (opt & 1) {
                 mode_t mmode = 0777;
                 if (!bb_parse_mode(smode, &mmode)) {
@@ -77,8 +79,10 @@ int mkdir_main(int argc UNUSED_PARAM, char **argv)
         }
         if (opt & 2)
                 flags |= FILEUTILS_RECUR;
+        if ((opt & 4) && FILEUTILS_VERBOSE)
+                flags |= FILEUTILS_VERBOSE;
 #if ENABLE_SELINUX
-        if (opt & 4) {
+        if (opt & 8) {
                 selinux_or_die();
                 setfscreatecon_or_die(scontext);
         }
diff --git a/coreutils/mv.c b/coreutils/mv.c
index f127dfabd..50571755b 100644
--- a/coreutils/mv.c
+++ b/coreutils/mv.c
@@ -33,13 +33,17 @@ static const char mv_longopts[] ALIGN1 =
         "interactive\0" No_argument "i"
         "force\0"       No_argument "f"
         "no-clobber\0"  No_argument "n"
+        IF_FEATURE_VERBOSE(
         "verbose\0"     No_argument "v"
+        )
         ;
 #endif
 
 #define OPT_FORCE       (1 << 0)
 #define OPT_INTERACTIVE (1 << 1)
 #define OPT_NOCLOBBER   (1 << 2)
+#define OPT_VERBOSE     ((1 << 3) * ENABLE_FEATURE_VERBOSE)
+
 
 int mv_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
 int mv_main(int argc, char **argv)
@@ -58,7 +62,6 @@ int mv_main(int argc, char **argv)
         /* Need at least two arguments.
          * If more than one of -f, -i, -n is specified , only the final one
          * takes effect (it unsets previous options).
-         * -v is accepted but ignored.
          */
         opt_complementary = "-2:f-in:i-fn:n-fi";
         flags = getopt32(argv, "finv");
@@ -148,6 +151,9 @@ int mv_main(int argc, char **argv)
                         status = 1;
                 }
  RET_0:
+                if (flags & OPT_VERBOSE) {
+                        printf("'%s' -> '%s'\n", *argv, dest);
+                }
                 if (dest != last) {
                         free((void *) dest);
                 }
diff --git a/coreutils/rm.c b/coreutils/rm.c
index 042fba162..d0ad81dfc 100644
--- a/coreutils/rm.c
+++ b/coreutils/rm.c
@@ -38,7 +38,6 @@ int rm_main(int argc UNUSED_PARAM, char **argv)
         unsigned opt;
 
         opt_complementary = "f-i:i-f";
-        /* -v (verbose) is ignored */
         opt = getopt32(argv, "fiRrv");
         argv += optind;
         if (opt & 1)
@@ -47,6 +46,8 @@ int rm_main(int argc UNUSED_PARAM, char **argv)
                 flags |= FILEUTILS_INTERACTIVE;
         if (opt & (8|4))
                 flags |= FILEUTILS_RECUR;
+        if ((opt & 16) && FILEUTILS_VERBOSE)
+                flags |= FILEUTILS_VERBOSE;
 
         if (*argv != NULL) {
                 do {
diff --git a/coreutils/rmdir.c b/coreutils/rmdir.c
index cc2dea010..0792a1c8e 100644
--- a/coreutils/rmdir.c
+++ b/coreutils/rmdir.c
@@ -31,7 +31,7 @@
 
 
 #define PARENTS          (1 << 0)
-//efine VERBOSE          (1 << 1) //accepted but ignored
+#define VERBOSE          ((1 << 1) * ENABLE_FEATURE_VERBOSE)
 #define IGNORE_NON_EMPTY (1 << 2)
 
 int rmdir_main(int argc, char **argv) MAIN_EXTERNALLY_VISIBLE;
@@ -44,10 +44,12 @@ int rmdir_main(int argc UNUSED_PARAM, char **argv)
 #if ENABLE_FEATURE_RMDIR_LONG_OPTIONS
         static const char rmdir_longopts[] ALIGN1 =
                 "parents\0"                  No_argument "p"
-                "verbose\0"                  No_argument "v"
                 /* Debian etch: many packages fail to be purged or installed
                  * because they desperately want this option: */
                 "ignore-fail-on-non-empty\0" No_argument "\xff"
+                IF_FEATURE_VERBOSE(
+                "verbose\0"                  No_argument "v"
+                )
                 ;
         applet_long_options = rmdir_longopts;
 #endif
@@ -62,6 +64,10 @@ int rmdir_main(int argc UNUSED_PARAM, char **argv)
                 path = *argv;
 
                 while (1) {
+                        if (flags & VERBOSE) {
+                                printf("rmdir: removing directory, '%s'\n", path);
+                        }
+
                         if (rmdir(path) < 0) {
 #if ENABLE_FEATURE_RMDIR_LONG_OPTIONS
                                 if ((flags & IGNORE_NON_EMPTY) && errno == ENOTEMPTY)
diff --git a/include/libbb.h b/include/libbb.h
index afdee38c4..a1a0dc18c 100644
--- a/include/libbb.h
+++ b/include/libbb.h
@@ -334,6 +334,8 @@ enum {	/* DO NOT CHANGE THESE VALUES!  cp.c, mv.c, install.c depend on them. */
         FILEUTILS_SET_SECURITY_CONTEXT = 1 << 10,
 #endif
         FILEUTILS_IGNORE_CHMOD_ERR = 1 << 11,
+        /* -v */
+        FILEUTILS_VERBOSE         = (1 << 12) * ENABLE_FEATURE_VERBOSE,
 };
 #define FILEUTILS_CP_OPTSTR "pdRfilsLH" IF_SELINUX("c")
 extern int remove_file(const char *path, int flags) FAST_FUNC;
diff --git a/libbb/copy_file.c b/libbb/copy_file.c
index 9333a8d49..a4be875d2 100644
--- a/libbb/copy_file.c
+++ b/libbb/copy_file.c
@@ -389,5 +389,9 @@ int FAST_FUNC copy_file(const char *source, const char *dest, int flags)
                         bb_perror_msg("can't preserve %s of '%s'", "permissions", dest);
         }
 
+        if (flags & FILEUTILS_VERBOSE) {
+                printf("'%s' -> '%s'\n", source, dest);
+        }
+
         return retval;
 }
diff --git a/libbb/make_directory.c b/libbb/make_directory.c
index 7826b90f5..89352ca1f 100644
--- a/libbb/make_directory.c
+++ b/libbb/make_directory.c
@@ -99,6 +99,10 @@ int FAST_FUNC bb_make_directory(char *path, long mode, int flags)
                         if (!c) {
                                 goto ret0;
                         }
+                } else {
+                        if (flags & FILEUTILS_VERBOSE) {
+                                printf("created directory: '%s'\n", path);
+                        }
                 }
 
                 if (!c) {
diff --git a/libbb/remove_file.c b/libbb/remove_file.c
index 5b75f7f30..eaca293d9 100644
--- a/libbb/remove_file.c
+++ b/libbb/remove_file.c
@@ -78,6 +78,10 @@ int FAST_FUNC remove_file(const char *path, int flags)
                         return -1;
                 }
 
+                if (flags & FILEUTILS_VERBOSE) {
+                        printf("removed directory: '%s'\n", path);
+                }
+
                 return status;
         }
 
@@ -98,5 +102,9 @@ int FAST_FUNC remove_file(const char *path, int flags)
                 return -1;
         }
 
+        if (flags & FILEUTILS_VERBOSE) {
+                printf("removed '%s'\n", path);
+        }
+
         return 0;
 }